Approximate analysis of electromagnetic scattering from corrugated conducting surfaces by inhomogeneous surface impedance modeling

2005 ◽  
Author(s):  
P. Kumar ◽  
N. Kumar
Keyword(s):  
Electromagnetic Scattering ◽  
Surface Impedance ◽  
Approximate Analysis ◽  
Inhomogeneous Surface ◽  
Impedance Modeling

scholarly journals Reconstruction of perfectly conducting rough surfaces by the use of inhomogeneous surface impedance modeling

2009 ◽  
Vol 3 (2) ◽  
pp. 295-307 ◽  
Author(s):  
Emre Kiliç ◽  
◽  
Mehmet Çayören ◽  
Ali Yapar ◽  
Íbrahim Akduman
Keyword(s):  
Surface Impedance ◽  
Rough Surfaces ◽  
Inhomogeneous Surface ◽  
Impedance Modeling

scholarly journals Time-varying metamaterials and metasurfaces for antennas and propagation applications

2021 ◽  
Vol 2015 (1) ◽  
pp. 012121
Author(s):  
D. Ramaccia ◽  
A. Toscano ◽  
F. Bilotti
Keyword(s):  
Electromagnetic Field ◽  
Electromagnetic Scattering ◽  
Surface Impedance ◽  
Frequency Conversion ◽  
External Control ◽  
Anomalous Scattering ◽  
Time Varying ◽  
Excitation Signal ◽  
Constitutive Parameters ◽  
Antenna Systems

Abstract In this contribution we present the most recent results from our group about the opportunities offered by time-varying metamaterials and metasurfaces for conceiving antenna systems and devices exhibiting artificial non-reciprocity, frequency conversion, energy accumulation and temporal electromagnetic scattering. Such artificial metastructures are characterized by constitutive parameters (permittivity, permeability and/or surface impedance) that are modulated in time through an external control or requires modulated excitation signal for enabling anomalous scattering behaviour. Here, we briefly describe the physical insights of the unusual interaction arising between the electromagnetic field and such metamaterials and metasurfaces, and then we present some antennas and propagation applications, showing the performances of non-reciprocal antenna systems, magnet-less isolators, Doppler cloaks, temporal devices and metasurface-based virtual absorbers.

Surface impedance modeling of PEC targets: application to shape reconstruction

2009 ◽  
Vol 25 (11) ◽  
pp. 115003 ◽  
Author(s):  
Mehmet Çayören ◽  
İbrahim Akduman ◽  
Ali Yapar ◽  
Lorenzo Crocco
Keyword(s):  
Surface Impedance ◽  
Shape Reconstruction ◽  
Impedance Modeling
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